CN109261727A - A kind of the roll shape setting method and system of mkw mill - Google Patents
A kind of the roll shape setting method and system of mkw mill Download PDFInfo
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- CN109261727A CN109261727A CN201811113132.XA CN201811113132A CN109261727A CN 109261727 A CN109261727 A CN 109261727A CN 201811113132 A CN201811113132 A CN 201811113132A CN 109261727 A CN109261727 A CN 109261727A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
- B21B37/30—Control of flatness or profile during rolling of strip, sheets or plates using roll camber control
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Abstract
The invention discloses the roll shape setting methods and system of a kind of mkw mill.This method comprises: the initial stroke of setting each rack gear of mkw mill support roller；Target flatness curve is determined according to the initial stroke；According to the target flatness curve and default theoretically perfect tray shape curve, the target stroke of each rack gear of mkw mill support roller is determined；Rolling production board shape curve is carried out according to the target stroke；Judge the deviation of the production board shape curve and the default theoretically perfect tray shape curve whether within the scope of deviation threshold；If so, stopping rolling；If it is not, the adjustment initial stroke, jumps to determining target flatness curve step.The initial value and on-line tuning rack gear stroke that the present invention passes through setting mkw mill backing roll rack gear stroke, control panel shape, reliable theoretical basis is provided for the roller shape setting of live eight cold mill groups, promotes the plate form control effect of eight cold mill groups that can effectively be promoted.
Description
Technical field
The present invention relates to tandem mills Strip Shape Control fields, more particularly to a kind of roll shape setting method of mkw mill
And system.
Background technique
For mkw mill, working roller and intermediate calender rolls roll shape belong to static plate shape parameter, before the rolling roller
Completion is ground on grinding machine, can not be adjusted during the rolling process, and backing roll roll shape belongs to dynamic sheet shape parameter, during the rolling process
It can dynamically adjust, so the optimum roll shape that mainly research backing roll roll shape radially adjusts.It is radially adjusted based on backing roll roll shape
Optimum roll shape setting model be divided into following two step: (1) the backing roll roll shape based on incoming profile is presetting；(2) operation of rolling
In, the on-line tuning of backing roll roll shape.In the practical operation of rolling, it may appear that due to the fluctuation of supplied materials section configuration, incoming profile
Fluctuation, the fluctuation of lubricating process parameter, the fluctuation of practical rolling technological parameter and the change of caused work roll thermal crown
There is relatively large deviation and in complex wave states in equal milling trains exit plate shape and target flatness.
Summary of the invention
The object of the present invention is to provide the roll shape setting method and system of a kind of mkw mill, milling train exit plate shape and bearing
The flexible adjustment amount of roller tooth item is related, in the case where adjusting backing roll rack gear stroke, is adjusted online to backing roll roll shape
It is whole.
To achieve the above object, the present invention provides following schemes:
A kind of roll shape setting method of mkw mill, comprising:
Set the initial stroke of each rack gear of mkw mill support roller；
Target flatness curve is determined according to the initial stroke；
According to the target flatness curve and default theoretically perfect tray shape curve, the mesh of each rack gear of mkw mill support roller is determined
Mark stroke；
Rolling production board shape curve is carried out according to the target stroke；
Judge the deviation of the production board shape curve and the default theoretically perfect tray shape curve whether within the scope of deviation threshold；
If so, stopping rolling；
If it is not, the adjustment initial stroke, jumps to determining target flatness curve step.
Optionally, in the initial stroke of setting each rack gear of mkw mill support roller, before further include:
Obtain the device parameter and supplied materials parameter of mkw mill；
Obtain the technological parameter in the operation of rolling；
Set target flatness curvilinear system numerical value；
According to prediction of plate shape model computing board shape cross direction profiles value.
Optionally, the device parameter of the mkw mill and supplied materials parameter include the barrel length of working roll, intermediate calender rolls
Barrel length, the barrel length of backing roll, the roller diameter of working roll, the roller diameter of intermediate calender rolls, the roller diameter of backing roll, top working roll operation
Distance of the side bending roller force to rolling centerline, the distance of top working roll transmission side bending roller force to rolling centerline, bottom working roll behaviour
Make distance of the side bending roller force to rolling centerline, the distance of bottom working roll transmission side bending roller force to rolling centerline, backing roll back
Center distance between bearings are served as a contrast, back lining bearing of supporting roll width, back lining bearing is several on a certain backing roll, upper and lower working roller point
The axial connecting line of implantation, upper and lower intermediate calender rolls roll shape Distribution Value, the roll shape Distribution Value of backing roll, left side backing roll and intermediate calender rolls with
The angle of vertical direction, strip material thickness, width, elasticity modulus, Poisson's ratio and resistance of deformation.
Optionally, the technological parameter in the operation of rolling includes: mill speed, reduction ratio, working roll fore side roller
Power, working roll transmission side bending roller force, top working roll roll shifting amount, bottom working roll roll shifting amount, average backward pull and average forward pull.
Optionally, according to the target flatness curve and default theoretically perfect tray shape curve, determine that mkw mill support roller is each
The target stroke of rack gear, specifically includes:
Judge the size of the functional value of the target flatness curve and the functional value of the default theoretically perfect tray shape curve；
When the functional value of the target flatness curve is less than the functional value of the default theoretically perfect tray shape curve, described in determination
The target stroke of each rack gear of mkw mill support roller is the sum of the initial stroke and preset increments, then jumps to determination
Target flatness curve step；
When the functional value of the target flatness curve is greater than or equal to the functional value of the default theoretically perfect tray shape curve, really
The target stroke of fixed each rack gear of mkw mill support roller is the initial stroke.
A kind of roll shape setting system of mkw mill, comprising:
Initial stroke setting module, for setting the initial stroke of each rack gear of mkw mill support roller；
Target flatness curve determining module, for determining target flatness curve according to the initial stroke；
Target stroke determining module, for determining according to the target flatness curve and default theoretically perfect tray shape curve
The target stroke of each rack gear of mkw mill support roller；
Module is rolled, for carrying out rolling production board shape curve according to the target stroke；
Judgment module, for judging the deviation of the production board shape curve and the default theoretically perfect tray shape curve whether inclined
In poor threshold range；
As a result determining module, for when the deviation of the production board shape curve and the default theoretically perfect tray shape curve is in deviation
When in threshold range, stop rolling；
Module is adjusted, for when the deviation of the production board shape curve and the default theoretically perfect tray shape curve is not in deviation threshold
When being worth in range, the initial stroke is adjusted, determining target flatness curve step is jumped to.
Optionally, further includes:
Device parameter and supplied materials parameter acquisition module, for obtaining the device parameter and supplied materials parameter of mkw mill；
Technological parameter obtains module, for obtaining the technological parameter in the operation of rolling；
Setting module, for setting target flatness curvilinear system numerical value；
Computing module, for according to prediction of plate shape model computing board shape cross direction profiles value.
Optionally, the device parameter of the mkw mill and supplied materials parameter include the barrel length of working roll, intermediate calender rolls
Barrel length, the barrel length of backing roll, the roller diameter of working roll, the roller diameter of intermediate calender rolls, the roller diameter of backing roll, top working roll operation
Distance of the side bending roller force to rolling centerline, the distance of top working roll transmission side bending roller force to rolling centerline, bottom working roll behaviour
Make distance of the side bending roller force to rolling centerline, the distance of bottom working roll transmission side bending roller force to rolling centerline, backing roll back
Center distance between bearings are served as a contrast, back lining bearing of supporting roll width, back lining bearing is several on a certain backing roll, upper and lower working roller point
The axial connecting line of implantation, upper and lower intermediate calender rolls roll shape Distribution Value, the roll shape Distribution Value of backing roll, left side backing roll and intermediate calender rolls with
The angle of vertical direction, strip material thickness, width, elasticity modulus, Poisson's ratio and resistance of deformation.
Optionally, the technological parameter in the operation of rolling includes: mill speed, reduction ratio, working roll fore side roller
Power, working roll transmission side bending roller force, top working roll roll shifting amount, bottom working roll roll shifting amount, average backward pull and average forward pull.
Optionally, the target stroke determining module, specifically includes:
Judging unit, for judging the functional value of the target flatness curve and the function of the default theoretically perfect tray shape curve
The size of value；
First determination unit is less than the default theoretically perfect tray shape curve for the functional value when the target flatness curve
When functional value, determine each rack gear of mkw mill support roller target stroke be the initial stroke and preset increments it
With then jump to determining target flatness curve step；
Second determination unit is greater than or equal to the default theoretically perfect tray shape for the functional value when the target flatness curve
When the functional value of curve, determine that the target stroke of each rack gear of mkw mill support roller is the initial stroke.
Compared with prior art, the present invention have following technical effect that the present invention according to the target flatness curve and
Default theoretically perfect tray shape curve, determines the target stroke of each rack gear of mkw mill support roller；It is carried out according to the target stroke
Rolling production board shape curve；According to the fluctuation of supplied materials section configuration, the fluctuation of incoming profile, lubricating process parameter wave
Support roller roll shape is adjusted in the fluctuation of dynamic, practical rolling technological parameter and the change of caused work roll thermal crown online
It is whole；Judge the deviation of the production board shape curve and the default theoretically perfect tray shape curve whether within the scope of deviation threshold；If so,
Stop rolling；If it is not, the adjustment initial stroke, jumps to determining target flatness curve step.The present invention passes through setting eight
The initial value and on-line tuning rack gear stroke of roller mill backing roll rack gear stroke, control panel shape, for live eight cold mills
The roller shape setting of group provides reliable theoretical basis, promotes the plate form control effect of eight cold mill groups that can effectively be mentioned
It rises.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the flow chart of the roll shape setting method of mkw mill of the embodiment of the present invention；
Fig. 2 is backing roll roll shape of the present invention radially adjustment schematic illustration；
Fig. 3 is the optimum roll shape front and rear panel shape comparison diagram of the corresponding mkw mill of embodiment 1；
Fig. 4 is the optimum roll shape front and rear panel shape of the corresponding mkw mill of embodiment 2 to figure；
Fig. 5 is that the roll shape of mkw mill of the embodiment of the present invention sets the structural block diagram of system.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Fig. 1 is the flow chart of the roll shape setting method of mkw mill of the embodiment of the present invention.As shown in Figure 1, a kind of eight rollings
The roll shape setting method of machine the following steps are included:
Step 101: the initial stroke of setting each rack gear of mkw mill support roller.
Step 102: target flatness curve is determined according to the initial stroke.
Step 103: according to the target flatness curve and default theoretically perfect tray shape curve, determining that mkw mill support roller is each
The target stroke of rack gear.
Judge the size of the functional value of the target flatness curve and the functional value of the default theoretically perfect tray shape curve；
When the functional value of the target flatness curve is less than the functional value of the default theoretically perfect tray shape curve, described in determination
The target stroke of each rack gear of mkw mill support roller is the sum of the initial stroke and preset increments, then jumps to determination
Target flatness curve step；
When the functional value of the target flatness curve is greater than or equal to the functional value of the default theoretically perfect tray shape curve, really
The target stroke of fixed each rack gear of mkw mill support roller is the initial stroke.
Step 104: rolling production board shape curve is carried out according to the target stroke.
Step 105: judging the deviation of the production board shape curve and the default theoretically perfect tray shape curve whether in deviation threshold
It is worth in range.
Step 106: if so, stopping rolling.
Step 107: if it is not, the adjustment initial stroke, jumps to determining target flatness curve step.
In step 101: the initial stroke of setting each rack gear of mkw mill support roller, before further include:
Obtain the device parameter and supplied materials parameter of mkw mill；The device parameter and supplied materials parameter packet of the mkw mill
It includes, the barrel length of working roll, the barrel length of intermediate calender rolls, the barrel length of backing roll, the roller diameter of working roll, the roller of intermediate calender rolls
Diameter, the roller diameter of backing roll, the distance of top working roll fore side bending roller force to rolling centerline, top working roll transmission side bending roller force arrive
The distance of rolling centerline, the distance of bottom working roll fore side bending roller force to rolling centerline, bottom working roll transmission side bending roller force
To the distance of rolling centerline, back lining bearing of supporting roll center is away from, back lining bearing of supporting roll width, backing axis on a certain backing roll
Hold several, a upper and lower working roller Distribution Value, upper and lower intermediate calender rolls roll shape Distribution Value, the roll shape Distribution Value of backing roll, left side
The angle of the axial connecting line and vertical direction of backing roll and intermediate calender rolls, strip material thickness, width, elasticity modulus, Poisson's ratio with
And resistance of deformation.
Obtain the technological parameter in the operation of rolling；Technological parameter in the operation of rolling includes: mill speed, pressure
Rate, working roll fore side bending roller force, working roll transmission side bending roller force, top working roll roll shifting amount, bottom working roll roll shifting amount, after average
Tension and average forward pull.
Set target flatness curvilinear system numerical value.
According to prediction of plate shape model computing board shape cross direction profiles value.
Embodiment 1:
By taking the setting of the optimum roll shape of certain 1,450 8 cold mill group 1# rack of factory as an example, according to calculation process shown in FIG. 1
Figure, firstly, collecting the device parameter and supplied materials parameter of eight cold mill group 1# racks, the barrel length L of working rollw1=
1550mm, the barrel length L of intermediate calender rollsm1=1665mm, the barrel length L of backing roll1=1550mm, the roller diameter D of working rollw1=
290mm, the roller diameter D of intermediate calender rollsm1=480, the roller diameter D of backing rollb1=520mm, top working roll fore side bending roller force is into rolling
The distance of heart lineDistance of the top working roll transmission side bending roller force to rolling centerlineLower work
Distance of the roller fore side bending roller force to rolling centerlineBottom working roll transmission side bending roller force is to rolling centerline
DistanceBack lining bearing of supporting roll center is away from lbF=150mm, back lining bearing of supporting roll width Bz=100mm,
Back lining bearing number 10 on a certain backing roll, the angle of the axial connecting line and vertical direction of left side backing roll and intermediate calender rollsStrip material thickness H=3mm, width B=1250mm, elastic modulus E=200GPa, Poisson's ratio υ=0.269 deforms
Drag k=1050MPa；
Technological Parameters of Rolling Process, 1# rack mill speed v are collected later1=253m/min, band reduction ratio ζ1=
0.25, working roll fore side bending roller force Fwl1=300KN, working roll transmission side bending roller force Fwr1=294KN, top working roll roll shifting amount
δc11=65mm, bottom working roll roll shifting amount δc21=50mm, average backward pull T0=62KN, average forward pull T1=34KN；
Then given target flatness curvilinear system numerical value determines target flatness curve: b0=2.5, b2=6.7, b4=2.3；
Then given each rack gear stroke initial value y of mkw mill backing roll1=6mm, y2=0mm, y3=0mm, y4=
0mm、y5=0mm, y6=0mm, y7=0mm, y8=0mm, y9=0mm, y10=6mm, optimizing step delta yj=0.1mm and rack gear are stretched
Contracting amount maximum value yjmax=20mm；
Calculating parameter is brought into flow of metal and rolls' deformation coupled wave equation according to prediction of plate shape model:
In formula, hiThickness of strip cross direction profiles value is exported for milling train；hn+1For (n+1)th item member exit thickness；
Respectively indicate top working roll left and right side amount of deflection distribution (mm)；Respectively indicate upper and lower working roller Distribution Value
(mm)；K is average deformation drag (MPa)；qn+1、qiFor draught pressure.
And the unknown quantity solved, according to formulaProduction board shape cross direction profiles value can be obtained
βi；
It then enables and compares parameter F=1 × 1020(default theoretically perfect tray shape curvilinear function value), the plate shape being calculated is lateral
Distribution Value βiIt is updated to objective function:
In formula, ξ --- weighting coefficient；
N --- strip Cross slat member number；
αi--- target flatness；
b0,b2,b4--- target flatness coefficient；
βiPlate shape cross direction profiles value；y1,y2,…,y10Support roller rack gear stroke.
Calculating target function value F (Xy) (target flatness curvilinear function value), compare F (Xy) and F size, F > F (Xy), it enables
F=F (Xy), y 'j=yj, yj+Δyj> yjmax(j=1,2 ... n), then program enters (g)；
Y then is set as to mkw mill backing roll rack gear stroke according to step (g)1'=8mm, y2'=3mm, y3'=
2mm、y4'=3mm, y5'=0mm, y6'=0mm, y7'=3mm, y8'=2mm, y9'=3mm, y10'=8mm；
Production board shape and target flatness deviation F (Xy) smaller, meet the requirement of plate shape, then program is transferred to target stroke and determines
Step, when stopping rolling, EP (end of program).
As shown in table 1, eight cold mill group backing roll rack gear strokes are made after can be seen that optimization in conjunction with Fig. 2 and Fig. 3
Different amplitudes are optimized and revised, after the plate shape after optimization has larger improvement, maximum template value to be reduced to optimization by 7I before relatively optimizing
5I, plate shape distribution it is more uniform, improve the outlet strip shape quality of eight roller tandem mills, be conducive to eight cold mill group bands
The quality of steel product improves, and promotes the economic benefit at scene.
1 embodiment of table, 1 corresponding eight cold mills group mkw mill backing roll rack gear stroke optimization front and back comparison
| Bearing number | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| Before optimization (mm) | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 |
| After optimization (mm) | 83 | 2 | 3 | 0 | 0 | 3 | 2 | 3 | 8 |
Embodiment 2:
By taking certain 1,250 8 cold mill group roller of factory and roll shifting synthetic setting as an example, according to calculation flow chart shown in FIG. 1,
Firstly, collecting the device parameter and supplied materials parameter of eight cold mill group 2# racks, the barrel length L of working rollw2In=1350mm
Between roller barrel length Lm2=1400mm, the barrel length L of backing roll2=1350mm, the roller diameter D of working rollw2=260mm, in
Between roller roller diameter Dm2=430, the roller diameter D of backing rollb2=490mm, top working roll fore side bending roller force to rolling centerline away from
FromDistance of the top working roll transmission side bending roller force to rolling centerlineBottom working roll fore side
Distance of the bending roller force to rolling centerlineDistance of the bottom working roll transmission side bending roller force to rolling centerlineBack lining bearing of supporting roll center is away from lbF=80mm, back lining bearing of supporting roll width Bz=90mm, a certain backing roll
Upper back lining bearing number 8, the angle of the axial connecting line and vertical direction of left side backing roll and intermediate calender rollsStrip material
Thickness H=4mm, width B=950mm, elastic modulus E=210GPa, Poisson's ratio υ=0.235, resistance of deformation k=875MPa；
Technological Parameters of Rolling Process, 2# rack mill speed v are collected later2=336m/min, band reduction ratio ζ1=
0.24, working roll fore side bending roller force Fwl1=274KN, working roll transmission side bending roller force Fwr1=312KN, top working roll roll shifting amount
δc12=46mm, bottom working roll roll shifting amount δc22=50mm, average backward pull T0=33KN, average forward pull T1=34KN；
Then given target flatness curvilinear system numerical value determines target flatness curve: b0=3, b2=4.5, b4=2；
Then given each rack gear stroke initial value y of mkw mill backing roll1=7mm, y2=0mm, y3=5mm, y4=
0mm、y5=0mm, y6=5mm, y7=0mm, y8=7mm, optimizing step delta yj=0.1mm and rack gear stroke maximum value yjmax=
20mm；
Flow of metal and rolls' deformation coupled wave equation then into are brought calculating parameter according to prediction of plate shape model
And the unknown quantity solved, according to formulaProduction board shape cross direction profiles value can be obtained
βi；
Then compare parameter F=1 × 10 according to step (f) order20, the plate shape cross direction profiles value β that will be calculatediIt is updated to
Objective function
In formula, ξ --- weighting coefficient；
N --- strip Cross slat member number；
αi--- target flatness；
b0,b2,b4--- target flatness coefficient；
Calculating target function value F (Xy), compare F (Xy) and F size, F < F (Xy) enable yj=yj+Δyj, then program into
Enter computing board shape cross direction profiles value step, production board shape cross direction profiles value β is calculated againi；Order compare parameter F=1 ×
1020, the plate shape cross direction profiles value β that will be calculatediIt is updated to objective function, calculating target function value F (Xy), F > F (Xy), then
Enable F=F (Xy), y 'j=yj, yj+Δyj> yjmax(j=1,2 ... n), then program enters target stroke and determines step；
Y then is set as to mkw mill backing roll rack gear stroke1'=10mm, y2'=5mm, y3'=5mm, y4'=
3mm、y5'=3mm, y6'=5mm, y7'=5mm, y8'=10mm；
By production board shape and target flatness deviation F (Xy) smaller, meet the requirement of plate shape, then it is true to be transferred to target stroke for program
Determine step, when stopping rolling, EP (end of program).
As shown in table 1, eight cold mill group backing roll rack gear strokes are made after can be seen that optimization in conjunction with Fig. 2 and Fig. 4
Different amplitudes are optimized and revised, after the plate shape after optimization has larger improvement, maximum template value to be reduced to optimization by 6I before relatively optimizing
2I, plate shape distribution it is more uniform, improve the outlet strip shape quality of eight roller tandem mills, be conducive to eight cold mill group bands
The quality of steel product improves, and promotes the economic benefit at scene.
2 embodiment of table, 2 corresponding eight cold mills group mkw mill backing roll rack gear stroke optimization front and back comparison
| Bearing number | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Before optimization (mm) | 7 | 0 | 5 | 0 | 0 | 5 | 0 | 7 |
| After optimization (mm) | 10 | 5 | 5 | 3 | 3 | 5 | 3 | 10 |
The specific embodiment provided according to the present invention, the invention discloses following technical effects: the present invention is according to the mesh
Target shape curve and default theoretically perfect tray shape curve, determine the target stroke of each rack gear of mkw mill support roller；According to described
Target stroke carries out rolling production board shape curve；Judge the production board shape curve and the default theoretically perfect tray shape curve
Deviation whether within the scope of deviation threshold；If so, stopping rolling；If it is not, the adjustment initial stroke, jumps to determining mesh
Target shape curve step.The present invention is stretched by the initial value and on-line tuning rack gear for setting mkw mill backing roll rack gear stroke
Contracting amount, control panel shape provide reliable theoretical basis for the roller shape setting of live eight cold mill groups, promote eight cold mill groups
Plate form control effect can effectively be promoted.
Fig. 5 is that the roll shape of mkw mill of the embodiment of the present invention sets the structural block diagram of system, as shown in figure 5, a kind of eight rollers
The roll shape of milling train sets system, comprising:
Initial stroke setting module 501, for setting the initial stroke of each rack gear of mkw mill support roller.
Target flatness curve determining module 502, for determining target flatness curve according to the initial stroke.
Target stroke determining module 503 is used for according to the target flatness curve and default theoretically perfect tray shape curve, really
Determine the target stroke of each rack gear of mkw mill support roller.
The target stroke determining module 503, specifically includes:
Judging unit, for judging the functional value of the target flatness curve and the function of the default theoretically perfect tray shape curve
The size of value；
First determination unit is less than the default theoretically perfect tray shape curve for the functional value when the target flatness curve
When functional value, determine each rack gear of mkw mill support roller target stroke be the initial stroke and preset increments it
With then jump to determining target flatness curve step；
Second determination unit is greater than or equal to the default theoretically perfect tray shape for the functional value when the target flatness curve
When the functional value of curve, determine that the target stroke of each rack gear of mkw mill support roller is the initial stroke.
Module 504 is rolled, for carrying out rolling production board shape curve according to the target stroke.
Judgment module 505, for judge the production board shape curve and the default theoretically perfect tray shape curve deviation whether
Within the scope of deviation threshold.
As a result determining module 506, for existing when the deviation of the production board shape curve and the default theoretically perfect tray shape curve
When within the scope of deviation threshold, stop rolling.
Module 507 is adjusted, for when the deviation of the production board shape curve and the default theoretically perfect tray shape curve is not inclined
When in poor threshold range, the initial stroke is adjusted, determining target flatness curve step is jumped to.
Shown system further include:
Device parameter and supplied materials parameter acquisition module, for obtaining the device parameter and supplied materials parameter of mkw mill；It is described
The device parameter and supplied materials parameter of mkw mill include the barrel length of working roll, the barrel length of intermediate calender rolls, the roller of backing roll
Body length, the roller diameter of working roll, the roller diameter of intermediate calender rolls, the roller diameter of backing roll, top working roll fore side bending roller force to rolling center
The distance of line, the distance of top working roll transmission side bending roller force to rolling centerline, bottom working roll fore side bending roller force is into rolling
The distance of heart line, the distance of bottom working roll transmission side bending roller force to rolling centerline, back lining bearing of supporting roll center is away from backing roll
Back lining bearing width, several, the upper and lower working roller Distribution Value of back lining bearing, upper and lower intermediate calender rolls roll shape on a certain backing roll
Distribution Value, the roll shape Distribution Value of backing roll, the angle of the axial connecting line and vertical direction of left side backing roll and intermediate calender rolls, band come
Expect thickness, width, elasticity modulus, Poisson's ratio and resistance of deformation.
Technological parameter obtains module, for obtaining the technological parameter in the operation of rolling；Technique ginseng in the operation of rolling
Number includes: mill speed, reduction ratio, working roll fore side bending roller force, working roll transmission side bending roller force, top working roll roll shifting amount,
Bottom working roll roll shifting amount, average backward pull and average forward pull.
Setting module, for setting target flatness curvilinear system numerical value；
Computing module, for according to prediction of plate shape model computing board shape cross direction profiles value.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For system disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said
It is bright to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, foundation
Thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification is not
It is interpreted as limitation of the present invention.
Claims (10)
1. a kind of roll shape setting method of mkw mill characterized by comprising
Set the initial stroke of each rack gear of mkw mill support roller；
Target flatness curve is determined according to the initial stroke；
According to the target flatness curve and default theoretically perfect tray shape curve, determine that the target of each rack gear of mkw mill support roller is stretched
Contracting amount；
Rolling production board shape curve is carried out according to the target stroke；
Judge the deviation of the production board shape curve and the default theoretically perfect tray shape curve whether within the scope of deviation threshold；
If so, stopping rolling；
If it is not, the adjustment initial stroke, jumps to determining target flatness curve step.
2. the roll shape setting method of mkw mill according to claim 1, which is characterized in that in the setting mkw mill
The initial stroke of each rack gear of support roller, before further include:
Obtain the device parameter and supplied materials parameter of mkw mill；
Obtain the technological parameter in the operation of rolling；
Set target flatness curvilinear system numerical value；
According to prediction of plate shape model computing board shape cross direction profiles value.
3. the roll shape setting method of mkw mill according to claim 2, which is characterized in that the equipment of the mkw mill
Parameter and supplied materials parameter include the barrel length of working roll, the barrel length of intermediate calender rolls, the barrel length of backing roll, working roll
Roller diameter, the roller diameter of intermediate calender rolls, the roller diameter of backing roll, the distance of top working roll fore side bending roller force to rolling centerline, upper work
Make distance of the roller transmission side bending roller force to rolling centerline, the distance of bottom working roll fore side bending roller force to rolling centerline, under
Working roll transmission side bending roller force to rolling centerline distance, back lining bearing of supporting roll center away from, back lining bearing of supporting roll width,
Several, the upper and lower working roller Distribution Value of back lining bearing, upper and lower intermediate calender rolls roll shape Distribution Value, backing roll on a certain backing roll
Roll shape Distribution Value, the angle of the axial connecting line and vertical direction of left side backing roll and intermediate calender rolls, strip material thickness, width,
Elasticity modulus, Poisson's ratio and resistance of deformation.
4. the roll shape setting method of mkw mill according to claim 2, which is characterized in that the work in the operation of rolling
Skill parameter includes: mill speed, reduction ratio, working roll fore side bending roller force, working roll transmission side bending roller force, top working roll roll shifting
Amount, bottom working roll roll shifting amount, average backward pull and average forward pull.
5. the roll shape setting method of mkw mill according to claim 1, which is characterized in that bent according to the target flatness
Line and default theoretically perfect tray shape curve, determine the target stroke of each rack gear of mkw mill support roller, specifically include:
Judge the size of the functional value of the target flatness curve and the functional value of the default theoretically perfect tray shape curve；
When the functional value of the target flatness curve is less than the functional value of the default theoretically perfect tray shape curve, eight roller is determined
The target stroke of each rack gear of rolling mill is the sum of the initial stroke and preset increments, then jumps to determining target
Plate shape curve step；
When the functional value of the target flatness curve is greater than or equal to the functional value of the default theoretically perfect tray shape curve, institute is determined
The target stroke for stating each rack gear of mkw mill support roller is the initial stroke.
6. a kind of roll shape of mkw mill sets system characterized by comprising
Initial stroke setting module, for setting the initial stroke of each rack gear of mkw mill support roller；
Target flatness curve determining module, for determining target flatness curve according to the initial stroke；
Target stroke determining module, for determining eight rollers according to the target flatness curve and default theoretically perfect tray shape curve
The target stroke of each rack gear of rolling mill；
Module is rolled, for carrying out rolling production board shape curve according to the target stroke；
Judgment module, for judging the deviation of the production board shape curve and the default theoretically perfect tray shape curve whether in deviation threshold
It is worth in range；
As a result determining module, for when the deviation of the production board shape curve and the default theoretically perfect tray shape curve is in deviation threshold
When in range, stop rolling；
Module is adjusted, for when the deviation of the production board shape curve and the default theoretically perfect tray shape curve is not in deviation threshold model
When enclosing interior, the initial stroke is adjusted, determining target flatness curve step is jumped to.
7. the roll shape of mkw mill according to claim 6 sets system, which is characterized in that further include:
Device parameter and supplied materials parameter acquisition module, for obtaining the device parameter and supplied materials parameter of mkw mill；
Technological parameter obtains module, for obtaining the technological parameter in the operation of rolling；
Setting module, for setting target flatness curvilinear system numerical value；
Computing module, for according to prediction of plate shape model computing board shape cross direction profiles value.
8. the roll shape of mkw mill according to claim 7 sets system, which is characterized in that the equipment of the mkw mill
Parameter and supplied materials parameter include the barrel length of working roll, the barrel length of intermediate calender rolls, the barrel length of backing roll, working roll
Roller diameter, the roller diameter of intermediate calender rolls, the roller diameter of backing roll, the distance of top working roll fore side bending roller force to rolling centerline, upper work
Make distance of the roller transmission side bending roller force to rolling centerline, the distance of bottom working roll fore side bending roller force to rolling centerline, under
Working roll transmission side bending roller force to rolling centerline distance, back lining bearing of supporting roll center away from, back lining bearing of supporting roll width,
Several, the upper and lower working roller Distribution Value of back lining bearing, upper and lower intermediate calender rolls roll shape Distribution Value, backing roll on a certain backing roll
Roll shape Distribution Value, the angle of the axial connecting line and vertical direction of left side backing roll and intermediate calender rolls, strip material thickness, width,
Elasticity modulus, Poisson's ratio and resistance of deformation.
9. the roll shape of mkw mill according to claim 7 sets system, which is characterized in that the work in the operation of rolling
Skill parameter includes: mill speed, reduction ratio, working roll fore side bending roller force, working roll transmission side bending roller force, top working roll roll shifting
Amount, bottom working roll roll shifting amount, average backward pull and average forward pull.
10. the roll shape of mkw mill according to claim 6 sets system, which is characterized in that the target stroke is true
Cover half block, specifically includes:
Judging unit, for judging the functional value of the target flatness curve and the functional value of the default theoretically perfect tray shape curve
Size；
First determination unit is less than the function of the default theoretically perfect tray shape curve for the functional value when the target flatness curve
When value, determine that the target stroke of each rack gear of mkw mill support roller is the sum of the initial stroke and preset increments,
Then determining target flatness curve step is jumped to；
Second determination unit is greater than or equal to the default theoretically perfect tray shape curve for the functional value when the target flatness curve
Functional value when, determine each rack gear of mkw mill support roller target stroke be the initial stroke.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112270070A (en) * | 2020-09-30 | 2021-01-26 | 江苏沙钢集团有限公司 | Method for gradually correcting roll profile of thin-strip continuous casting crystallization roll |
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| CN109261727B (en) | 2019-07-26 |
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